[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
       Class "Clostridia" Garrity et al. 2001 nom. ined. see Class Clostridia Rainey 2010
         Order Halanaerobiales corrig. Rainey and Zhilina 1995
           Family Halanaerobiaceae corrig. Oren et al. 1984
             Genus Halanaerobium corrig. Zeikus et al. 1984
               [Halanaerobium saccharolyticum] corrig. (Zhilina et al. 1992) Rainey et al. 1995
                 1 Halanaerobium saccharolyticum subsp. saccharolyticumᵀ corrig. (Zhilina et al. 1992) Rainey et al. 1995
                 2 Halanaerobium saccharolyticum subsp. senegalense corrig. (Cayol et al. 1994) Rainey et al. 1995